Which fish has a skeleton made of bone? a. salmon b. hagfish c. shark d. lamprey

The correct answer is option A, Salmon

The ribcage of salmon fish is made up of light weight bones which are nothing but series of interlocked disks. The ribcage bones give shape to the salmon’s body as they are curved in shape. Also these bones protect the internal organs .Salmon’s fins and tail are made up of bone like spines. Bone prevents the up and down movement of the fish.  

There are basically two types of fish based on their skeleton system: Bony (skeleton made up of bone)  Fishes and Cartilaginous (skeleton made up of cartilage) fishes . Sharks, hagfish and Lamprey are all Cartilaginous fishes  

the most common energy conversion is from kinetic energy to potential energy, and then from potential energy to kinetic energy.

later on comes the heat energy, mechanical energy, and other energy conversions.

this energy conversion is so common that we can find it in our day to day lives as well.

- one of the most common energy conversions involves the changing of potential energy to kinetic energy or kinetic energy to potential energy

the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

i hope this : )